body, html {
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background-color: #1a1a1a;
  color: #e0e0e0;
  display: flex;
  width: 100%;
  height: 100%;
}

body .dragtip {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  background: rgba(0,0,0,0.8);
  z-index: 999;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
}
body.dragover .dragtip {
  display: block;
}
body.dragover .dragtip h1 {
  position: absolute;
  top: 50%;
  left: 50%;
  margin: 0;
  transform: translate(-50%, -50%);
  font-size: 32px;
}
pre {
  margin: 0;
  font-family: "Helvetica Neue",Helvetica,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","微软雅黑",Arial,sans-serif;
}
.left {
  flex: 1;
  padding: 0;
  display: flex;
  flex-direction: column;
  background-color: #242424;
  border-radius: 8px 0 0 8px;
  margin: 10px 0 10px 10px;
}
.right {
  width: 200px;
  color: #e0e0e0;
  border-left: 1px solid #363636;
  padding: 15px;
  background-color: #242424;
  overflow: auto;
  margin: 10px 10px 10px 0;
  border-radius: 0 8px 8px 0;
}
.right ul {
  /* list-style: none; */
  padding: 0;
  margin: 0;
}
.right ul li {
  user-select: none;
  cursor: default;
  line-height: 24px;
  padding: 8px 12px;
  margin: 4px 0;
  border-radius: 4px;
  background-color: #2a2a2a;
  transition: background-color 0.2s;
  display: flex;
  align-items: center;
}
.right ul li:hover {
  background-color: #363636;
}
.chat-wrapper {
  flex: 1;
  font-size: 18px;
  line-height: 24px;
  display: flex;
  flex-direction: column;
  overflow: auto;
  scroll-behavior: smooth;
}
.chat-item {
  display: block;
  padding: 8px 15px;
  margin: 5px 0;
  transition: background-color 0.2s;
}
.chat-item:hover {
  background-color: #2a2a2a;
}
.chat-item .chat-item_user {
  display: block;
  margin-bottom: 4px;
  color: #64B5F6;
  font-weight: 500;
  font-size: 14px;
  user-select: none;
}
.chat-item .chat-item_user.system {
  color: #FFA726;
}
.chat-item .chat-item_content {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  padding-left: 0;
  color: #e0e0e0;
}
.chat-item .chat-item_content pre {
  white-space: pre-wrap;
  word-wrap: break-word;
  word-break: break-all;
  margin: 0;
  font-size: 15px;
  line-height: 1.5;
  color: #e0e0e0;
}
.chat-item .chat-item_content pre a {
  color: #64B5F6;
  text-decoration: none;
  transition: opacity 0.2s;
}
.chat-item .chat-item_content pre a:hover {
  opacity: 0.8;
}
.chat-item a.file, .chat-item a.file:visited {
  display: inline-block;
  padding: 8px 12px;
  margin-top: 4px;
  background-color: #2a2a2a;
  border-radius: 4px;
  color: #64B5F6;
  text-decoration: none;
  transition: background-color 0.2s;
}
.chat-item a.file:hover {
  background-color: #363636;
}
.txt-msg {
  outline: none;
  color: #e0e0e0;
  height: 20%;
  min-height: 100px;
  background-color: #2a2a2a;
  border: 1px solid #363636;
  border-radius: 0;
  padding: 12px;
  font-size: 14px;
  line-height: 1.5;
  margin: 0 15px 15px 15px;
  resize: none;
  -webkit-border-radius: 0;
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
}
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  z-index: 1000;
}

.modal-content {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: #2a2a2a;
  padding: 20px;
  border-radius: 5px;
  min-width: 300px;
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
  padding: 25px;
}

.modal h3 {
  margin: 0 0 15px 0;
  color: #64B5F6;
  font-size: 18px;
  margin-bottom: 20px;
}

.user-list {
  max-height: 300px;
  overflow-y: auto;
}

.user-select-item {
  padding: 8px;
  margin: 5px 0;
  cursor: pointer;
  color: #ffffffbb;
  background-color: #363636;
  border-radius: 4px;
  margin: 8px 0;
  transition: all 0.2s;
}

.user-select-item:hover {
  background-color: #404040;
}

.user-select-item label {
  display: flex;
  align-items: center;
  cursor: pointer;
  user-select: none;
}

.user-select-item input[type="checkbox"] {
  cursor: pointer;
  margin-right: 10px;
}

.user-select-item span {
  flex: 1;
}

.modal-footer {
  margin-top: 15px;
  text-align: right;
}

.modal-footer button {
  padding: 8px 20px;
  background: #64B5F6;
  color: #fff;
  border-radius: 4px;
  font-weight: 500;
  transition: all 0.2s;
  border: 1px solid #42A5F5;
  cursor: pointer;
}

.modal-footer button:first-child {
  background: transparent;
  color: #64B5F6;
  border: 1px solid #64B5F6;
  margin-right: 10px;
}

.modal-footer button:first-child:hover {
  background: rgba(100, 181, 246, 0.1);
}

.modal-footer button:hover {
  background: #42A5F5;
  border-color: #1E88E5;
}

.modal-footer button:disabled {
  background: #cccccc;
  border-color: #bbbbbb;
  cursor: not-allowed;
  opacity: 0.7;
}

.progress-container {
  margin: 15px 0;
}

.progress-text {
  color: #ffffffbb;
  margin-bottom: 5px;
  font-size: 14px;
}

.progress-bar {
  width: 100%;
  height: 8px;
  background: #363636;
  border-radius: 4px;
  overflow: hidden;
}

.progress-bar-inner {
  width: 0%;
  height: 100%;
  background: #64B5F6;
  border-radius: 4px;
  transition: width 0.3s ease;
}

.toolbar {
  background-color: #2a2a2a;
  margin: 0 15px;
  padding: 10px;
  border-radius: 4px 4px 0 0;
  border: 1px solid #363636;
  border-bottom: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.toolbar-left, .toolbar-right {
  display: flex;
  align-items: center;
}

.toolbar-btn,.copy-btn {
  background: none;
  border: none;
  padding: 8px;
  cursor: pointer;
  color: #e0e0e0;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
}

.send-btn:hover, .toolbar-btn:hover, .copy-btn:hover {
  background-color: #363636;
  /* color: #64B5F6; */
}


/* 拖拽提示样式 */
.dragtip {
  background: rgba(26, 26, 26, 0.95);
}

.dragtip h1 {
  color: #64B5F6;
  font-size: 28px;
  text-align: center;
}

.connection-status {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 16px;
  height: 16px;
  margin-right: 8px;
}

.connection-status svg {
  width: 16px;
  height: 16px;
}

.connection-status.connected {
  color: #4CAF50;
}

.connection-status.disconnected {
  color: #F44336;
}

.nickname-input-container {
  margin: 20px 0;
}

.nickname-input-container input {
  width: 100%;
  padding: 8px;
  border: 1px solid #363636;
  background: #2a2a2a;
  color: #e0e0e0;
  border-radius: 4px;
  font-size: 14px;
}

.nickname-input-container input[type="password"] {
  letter-spacing: 2px;
  font-family: monospace;
}

.nickname-input-container input:focus {
  outline: none;
  border-color: #64B5F6;
}

/* 移动端专用元素在PC上隐藏 */
.mobile-only {
  display: none;
}

.mobile-overlay {
  display: none;
}

/* Mobile responsive styles */
@media screen and (max-width: 768px) {
  .mobile-only {
    display: block;
  }
  
  .right {
    position: fixed;
    top: 0;
    right: -220px;
    width: 200px;
    height: 100%;
    transition: right 0.3s ease;
    margin: 0;
    border-radius: 0;
    z-index: 100;
    background-color: #242424;
  }

  .mobile-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 90;
  }

  body.show-users .mobile-overlay {
    display: block;
  }

  body.show-users .right {
    right: 0;
    box-shadow: -2px 0 5px rgba(0, 0, 0, 0.2);
  }

  .left {
    margin: 10px;
    border-radius: 8px;
  }

  body.show-users .toggle-users-btn {
    color: #64B5F6;
    background-color: #363636;
  }
}

/* 图片预览样式 */
.image-preview {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 8px;
}

.image-preview img {
  max-width: 300px;
  max-height: 300px;
  border-radius: 4px;
  cursor: pointer;
  transition: transform 0.2s;
}

.image-preview img:hover {
  transform: scale(1.02);
}